despite the nerves, jack and jackie are relishing the lead up to the long sports history. >> it's a fantastic experience. really, no one has it better than us. this is like, frosting on a cake for our whole family. >> reporter: don't look for any favoritism on sunday in new orleans. >> we will not have anything purple or won't have anything red. >> reporter: their family will have something silver and shiny, lombardi trophy. karen traverse, abc news. >> they got to have a favorite, right? for brother versus brother, mayor versus mayor. stephanie rawlings blake is feeling confident and has a bet going with san francisco's mayor. >> i've always know mayor lee as a gracious statesman, he is talking trash. i don't know what happened to him this morning. i look forward to hosting a day of seafood and service. i will show him what real crabs are. maryland blue crabs. we will work with the volunteers. >> mayor rawlings blake will have to wear a bib in san francisco while chowing down on crabs. >> mayor rawlings blake isn't the only one betting on a ravens win. >> jamie costello has been in new orlea